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i.MX: reset TX/RX descriptors when FEC is disabled. 

According to the FEC chapter of i.MX25 reference manual

RX adn TX descriptors are reseted when the FEC device is disabled through ECR.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Jean-Christophe Dubois 2016-05-30 19:26:00 +02:00 committed by Jason Wang
parent ccdb81d327
commit ff4b325f5e
1 changed files with 2 additions and 0 deletions
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2
hw/net/imx_fec.c
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@ -454,6 +454,8 @@ static void imx_fec_write(void *opaque, hwaddr addr,
}
if ((s->ecr & FEC_EN) == 0) {
s->rx_enabled = 0;
s->rx_descriptor = s->erdsr;
s->tx_descriptor = s->etdsr;
}
break;
case 0x040: /* MMFR */